I make a "backup image" of both my SSDs (both have Win 7 installed) usually every few weeks, have had to use the restore facility on a few occassions and all worked fine...
Just a note, if you want to put the backup image on another SSD/HDD other than the storage device it was made upon (ie. cloning), the new storage device must be the same size or bigger, your cannot put it on a smaller storage device, and Win 7 looks at the total volume size of the storage device and NOT the partition size...